JPH0779849B2 - Automatic fire extinguisher piping system - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a piping system for an automatic fire extinguisher, which incorporates a fire extinguishing agent.

[Conventional technology]

It is mandatory to install a package type automatic fire extinguishing system for social welfare facilities in a special situation where sprinkler systems cannot be installed in existing nursing homes.

As such a package type automatic fire extinguisher, for example, as shown in FIG. 4, a pressurized fire extinguisher storage box (5) including a pressurized gas container (1) and a drug storage container (2) is installed in a corridor of the facility. Etc., each room to be extinguished has a heat sensor (15) and a plurality of drug ejection nozzles (13), and these ejection nozzles (13) and the outlet pipe of the drug storage container (2) are installed. Some are connected by a drug supply pipe (18) provided with an electromagnetic selection valve (11).

According to such fire extinguishing equipment, the heat detector in a room (15)
When the fire is detected, the control panel unit (3 ') in the storage box (5) is activated to open the electromagnetic selection valve (11) corresponding to the room, and the pressurized gas is used to extinguish the extinguishing agent. It extinguishes fire by radiating from the jet nozzle (13).
In the figure, (18) is an alarm device such as a buzzer, (4) is a drive device for emitting fire extinguishing agents, and (16) is a standby power source.

[Problems to be Solved by the Invention]

However, the jet nozzle of the package type automatic fire extinguisher is installed on the ceiling, etc., and the chemical supply pipe is drawn behind the ceiling to communicate with these nozzles, but these chemical supply pipes usually have a small diameter for reasons such as ease of construction. Copper pipes are used. Therefore, there are many rooms to be extinguished, and especially when such a fire extinguishing facility is newly installed in an existing building, copper pipes should be used while avoiding many existing electrical wiring in the building and ducts for air supply and exhaust equipment. Since the pipe is extended, the extension distance of the pipe becomes long, and the pressure loss when the fire extinguishing agent flows in the copper pipe becomes large. Therefore, the installation positions of the drug storage container and the ejection nozzle must be relatively close,
Therefore, since a large-scale building requires a large number of drug storage containers, there is a problem of installation location and installation cost.

Also, in the piping system from the same drug storage container, a fire is detected at the two extinguishing target parts that are divided by the selection valve, and when each selection valve opens, due to the difference in perspective from the drug storage container to the extinguishing target part, respectively. The pressure loss in the piping is different. For this reason, the amount of the fire extinguishing agent emitted from the ejection nozzle located far from the medicine storage container is small, and the emission speed is also slowed down, resulting in variations in how the fire extinguishing agent is sprayed at each portion.

[Means for Solving the Problems]

As a result of various studies in view of this, the present invention has developed a piping system for an automatic fire extinguisher that solves the above problems.

That is, according to the present invention, a fire extinguishing agent storage container and a plurality of ejection nozzles installed at a plurality of parts requiring fire extinguishing are connected by a drug supply pipe provided with a selection valve for each part, and the sensing is installed at each part In a fire extinguisher that automatically opens a selective valve at the site when a fire is detected by a firearm and ejects extinguishing chemicals, the downstream side of each selective valve is immediately branched with multiple chemical supply pipes, and these multiple selective valves are connected. It is characterized in that it is connected to a main pipe having a larger pipe diameter than the medicine supply pipe provided with one block selection valve, and further connected to a medicine storage container and each block selection valve.

[Action]

In this way, the entire fire-extinguishing range is divided into several blocks, and by installing a main pipe with a diameter larger than the chemical supply pipe in the vicinity of each fire-extinguishing target part in the block, the block selection valve opens. In this case, there is almost no pressure loss of the fire extinguishing agent supplied into the main pipe.

In addition, the distance from the main pipe to the jet nozzle of each part is short. For this reason, the chemical supply pipes provided with selection valves were connected to each other, and the downstream side of each selection valve was immediately branched by the chemical supply pipes. It will be emitted in a uniform state from the nozzle.

〔Example〕

 Next, an embodiment of the present invention will be described.

As shown in FIG. 1, it has a pressurizing container (1) filled with 10 l of high-pressure nitrogen gas and a fire extinguishing agent storage container (2) filled with about 200 l of extinguishing agent. A fire extinguisher storage box (5) comprising a control panel unit (3) for controlling and a drive device (4) operated by this control panel in the event of a fire is constructed, and the storage box (5) is shown as shown in FIG.
Maximum length with a diameter of 25 mm that communicates with the drug storage container (2)
Fire extinguishing in each block of 60m A block main pipe (6) and B block main pipe (7) via electromagnetic A block selection valve (8) and B block selection valve (9) respectively Piping was performed along the vicinity of the target site.

Note that the block division is not limited to the two systems A and B, but can be set arbitrarily.

Next, as shown in FIG. 3, the main pipe (6) or (7)
The branch pipe (12) consisting of pipe joints is immediately connected to a branch pipe (12) with a solenoid selection valve (11) for pipes of 20 mm in diameter near the part to be extinguished via a strainer (10), and immediately branched. Copper pipe connection parts are provided, and these connection parts and 8 or 9 ejection nozzles (13) attached to the extinguishing target part are used as a chemical supply pipe (14) with a diameter of 10 mm and a maximum length.
Connected with an 8m copper pipe.

Further, as shown in FIG. 2, a heat sensor (15) is attached to each part.
Individually installed, the storage box (5) was equipped with an alarm buzzer and a storage box indicator light (not shown), and a standby power supply (16) was provided as a measure against power failure of the control panel unit.

The operation of such an automatic fire extinguishing system will be described below.

For example, if only one heat sensor (15) at a certain fire extinguishing site is activated, the alarm buzzer in the fire extinguisher storage box (5) sounds and the heat detector (1
The abnormality of a certain part of 5) is to be notified, and the driving device (4) is operated only when the other heat sensor (15) of the part is activated, and the selection valve (11) of that part and its part are activated. The block selection valve (8) or (9) of the block to which the item belongs belongs is opened, the discharge indicator lamp of the control panel unit (3) is turned on, and at the same time, the alarm buzzer is sounded and the storage box indicator lamp is made to blink.

The control panel unit (3) also has the following functions. First, the drive device (4) is provided with a safety device. When the safety device is working, that is, when it is on the LOCK side, the safety device indicator lamp of the control panel unit (3) is turned on and the safety device is released. If it is on the OPEN side, the storage box indicator light is turned on (blinks when the sensor operates).

Further, the drive unit (4) is provided with a test push button (17). When the safety device is set to the LOCK side and the test button is pushed, the solenoid of the drive unit (4) and all The selection valve can be operated manually, the emission indicator light will be on and the containment box indicator light will be flashing.

In addition, the control panel can be equipped with the function of opening the optional selection valve by remote manual operation so that the medicine can be emitted only to the desired fire extinguishing site from the jet nozzle that communicates with it. It is also possible to inform an external centralized control room or the like whether or not the worker worked to radiate the drug.

In addition, although the pressurization type fire extinguisher was described in the present embodiment, the same configuration is obtained when the pressure accumulation type fire extinguisher is used.

〔The invention's effect〕

As described above, according to the present invention, regardless of the distance from the drug storage container to each extinguishing target site, it is possible to always radiate the drug under uniform conditions regardless of the ejection nozzle of any site, and thus the drug storage container. That is, since the number of the fire extinguisher housing boxes is small, the installation cost and the installation space can be reduced, which is a remarkable effect in practical use.

[Brief description of drawings]

FIG. 1 is a front view showing a fire extinguisher storage box used in an embodiment of the present invention, FIG. 2 is a system diagram showing an embodiment of the present invention, and FIG.
FIG. 4 is a partially enlarged view of an embodiment of the present invention, and FIG. 4 is a system diagram showing a conventional example. 1 ... Pressurization container, 2 ... Drug storage container, 3, 3 '... Control panel unit, 4 ... Drive device, 5 ... Fire extinguisher storage box, 6 ... Main piping for A block, 7 ... B block main piping, 8 ... A block selection valve, 9 ... B block selection valve, 10 ... strainer, 11 ... electromagnetic selection valve, 12 ... branch pipe, 13 ... jet nozzle, 14 …… Medical agent supply pipe, 15 …… heat sensor, 16 …… standby power supply, 17 …… test push button, 18 …… alarm device,

Claims (1)

[Claims] 1. A fire extinguishing agent storage container and a plurality of ejection nozzles installed at a plurality of parts requiring fire extinguishing are connected by a drug supply pipe provided with a selection valve for each part and installed at each part. In a fire extinguisher that automatically opens a selective valve at the part when a fire is detected by a sensor and automatically ejects the extinguishing agent, the downstream side of each selective valve is immediately branched by a plurality of chemical supply pipes. Is connected to a main pipe having a pipe diameter larger than that of the chemical supply pipe provided with one block selection valve, and the chemical storage container and each block selection valve are connected to each other. Plumbing system.